Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
A moderate decline in the average high-temperature is seen during December, decreasing from a cool 55°F (12.8°C) in November to a frosty 44.8°F (7.1°C). Grays Valley, during December nights, observes an average temperature of 30°F (-1.1°C).Humidity
In Grays Valley, the average relative humidity in December is 74%.Rainfall
The month with the least rainfall is December, when the rain falls for 6.8 days and typically collects 1.54" (39mm) of precipitation.Snowfall
Months with snowfall in Grays Valley, Missouri, are January through May, November and December. In December, in Grays Valley, it is snowing for 3 days. Throughout December, 0.83" (21mm) of snow is accumulated. In Grays Valley, Missouri, during the entire year, snow falls for 16.1 days and aggregates up to 6.97" (177mm) of snow.Daylight
December has the shortest days of the year in Grays Valley, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 7:12 am and sunset at 4:58 pm. On the last day of December, in Grays Valley, Missouri, sunrise is at 7:30 am and sunset at 5:08 pm CST.
Sunshine
In December, the average sunshine in Grays Valley, Missouri, is 5.5h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 2 during December translates into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Grays Valley in December?
What is the average humidity in December in Grays Valley?
What is the driest month in Grays Valley?
How many days does it rain in December in Grays Valley?
How many days does it snow in December in Grays Valley?
What is the month with the shortest days in Grays Valley?
How many hours of daylight does Grays Valley have in December?
When is the sunrise / sunset in December in Grays Valley?
How many hours of sunshine does Grays Valley have in December?
What is the month with the lowest UV index in Grays Valley?
How high is the UV index in December in Grays Valley?
Average temperature in December
Grays Valley, MO
- Average high temperature in December: 44.8°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in December: 30°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in December
Grays Valley, MO
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Grays Valley, MO
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is March (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in December
Grays Valley, MO
- Average humidity in December: 74%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Grays Valley, MO
- Average rainfall in December: 1.54"
The wettest month (with the highest rainfall) is May (5.51").
The driest month (with the least rainfall) is December (1.54").
Average rainfall days in December
Grays Valley, MO
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is May (17.5 days).
The months with the least rainy days are January and December (6.8 days).
Average snowfall in December
Grays Valley, MO
- Average snowfall in December: 0.83"
The month with the highest snowfall is February (2.36").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Grays Valley, MO
- Average snowfall days in December: 3 days
The month with the highest number of snowfall days is February (5.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Grays Valley, MO
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in December
Grays Valley, MO
- Average sunshine days in December: 20.6 days
The month with the most sunshine days is December (20.6 days).
The month with the least sunshine days is July (11 days).
Average UV index in December
Grays Valley, MO
- Average UV index in December: 2
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Grays Valley, MO
- Average cloud cover in December: 41
The months with the most cloud cover are February and March (Cloud cover 46).
The months with the least cloud cover are June and August (Cloud cover 26).
Average visibility in December
Grays Valley, MO
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Grays Valley, Missouri, USA
Weather forecast for your location
2. Allow the app to use your location